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Periodic Impulse Average

Purpose

Periodically average Dirac impulses over specified time

Library

Control / Filters

Description

pict

This block periodically averages an input signal u   consisting of a series of Dirac impulses δ  . The output y   is updated at the end of each averaging period T  . Mathematically, this block corresponds to a moving average filter where the output is processed by a zero-order hold:

        ∫ t            (          )
y(t) = 1-    u(τ)dτ ⋅rect t- n-+-1∕2
      T  t- T                  T

The block is suited to determine average switching losses of power semiconductors. To determine average conduction losses, use the Periodic Average.

Parameters

Averaging time
The length of the averaging period (in sec.) and the sample time of the output signal. See also the Discrete-Periodic sample time type in section Sample Times.

Probe Signals

Input
The input signal.
Output
The filtered output signal.